Ubuntu Security Notice 398-1 – Various flaws have been reported in Firefox that allow an attacker to execute arbitrary code with user privileges by tricking the user into opening a malicious web page containing JavaScript or SVG.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/53396/USN-398-1.txt
Source: https://packetstormsecurity.com/files/53396/Ubuntu-Security-Notice-398-1.html